"Several suspects" are being sought in connection with the shooting that injured three other Plainfield residents, the Union County Prosector's Office announced Sunday morning.

Multiple 911 calls and an automatic notice from the city's ShotSpotter gunshot detection system alerted police to gunfire in the area of West Third Street and Manson Place shortly after 9 p.m., authorities said.

Responding officers found Marcano at that intersection and the three other victims nearby on the 1100 block of West Third Street, according to the prosecutor's office.

After an investigation by the Union County Homicide Task Force and the Plainfield Police Division, authorities believe that a group of men dressed in dark clothing exited a car just before more than a dozen shots were fired.

Marcano was pronounced dead shortly after 10 p.m., and the other three victims were taken to Robert Wood Johnson University Hospital in New Brunswick for treatment, authorities said. Their names have not been released and information about their condition was not immediately available.

Several parked cars were also hit by gunfire, and the prosecutor's office said they were removed from the scene to be processed for potential evidence.

The investigation is ongoing and anyone with information is asked to contact prosecutor’s office Sgt. Kevin Grimmer at 908-447-3777 or Det. Barry Kaplan at 908-418-2817.

A reward of up to $5,000 for information leading to an arrest and indictment in connection with the shooting is also being offered by Union County Crime Stoppers. Tips can be given anonymously by phone at 908-654-TIPS (8477), via text message by texting “UCTIP” and a message to 274637 (CRIMES), or online at www.uctip.org.

Saturday's shooting was the first killing in Plainfield this year, according to the prosecutor's office.

Katie Lannan may be reached at klannan@njadvancemedia.com. Follow her on Twitter @katielannan. Find NJ.com on Facebook. Stay up-to-the-minute with the latest Union County news by bookmarking nj.com/union.